#!/bin/bash
####################################################################
# Prey Linux Specific Functions - by Tomas Pollak
# (c) 2010 Fork Ltd. (usefork.com) - Licensed under the GPLv3.
####################################################################

run_as_current_user(){
	if [ "`whoami`" != "$logged_user" ]; then
		DISPLAY=:0 devel-su $logged_user -c "$1"
	else
		eval $1
	fi
}

get_gateway_ip() {
	if [ -z "$gateway_ip" ]; then
		gateway_ip=`ip r | grep default | cut -d ' ' -f 3`
	fi
}

get_wifi_device() {
	if [ -z "$wifi_device" ]; then
		wifi_device=`\`which iwconfig\` 2>&1 | grep -v "no wireless" | cut -f1 -d" " | grep -v "^$" | tail -1`
	fi
}

get_wifi_info() {
	if [ -z "$wifi_info" ]; then
		wifi_info=`\`which iwconfig\` 2>&1 | grep -v "no wireless"`
	fi
}

# attempts to connect to the first open public wifi network
# if we dont have NetworkManager available, we use plain iwconfig
try_to_connect() {

	if [ `which nm-applet` ]; then

		log ' -- Restarting NetworkManager and giving it some time to connect.'
		# lets restart the NM applet and give it 5 seconds to connect
		killall nm-applet &> /dev/null
		nm-applet --sm-disable & 2> /dev/null
		sleep 5

	else

		get_wifi_device
		if [ -n "$wifi_device" ]; then

			# access_points=`iwlist $wifi_device | awk -F '[ :=]+' '/(ESS|Freq|Qual)/{ printf $3" " } /Encr/{ print $4 }' | sort -k4 -k3nr`
			local open_essid=`\`which iwlist\` $wifi_device scan | awk -F '[ :=]+' '/(ESS|Freq|Qual)/{ printf $3" " } /Encr/{ print $4 }' | sort -k4 -k3nr | grep "off" | head -1 | cut -d ' ' -f1 | sed 's/"//g'`

			if [ -n $open_essid ]; then
				log " -- SSID found! Attempting to connect to ${open_essid}..."
				`which iwconfig` $wifi_device essid $open_essid
				`which dhclient3` $wifi_device
			else
				log ' -- No open SSIDs found.'
			fi

		else

			log ' !! No wifi device found!'

		fi

	fi

}

reverse_tunnel_command(){
	setsid "$base_path/lib/tunnel.sh" ${remote_tunnel_host} ${local_tunnel_port} ${remote_tunnel_port} ${remote_tunnel_user} ${remote_tunnel_pass} &> /dev/null
}

############################################
# updater-specific functions
############################################

# here we'll eventually put whatever we need to do in linux before
# performing a full update
pre_update_hook(){
	return 0
}

# post update hooks go in here
post_update_hook(){
	log ' -- Reloading Prey...'
	"$base_path/prey.sh" & # lets restart prey now
}

############################################
# device creation stuff
############################################

get_pc_info(){
	pc_name=`hostname`

	`which laptop-detect`
	if [ $? == 1 ]; then
		pc_type="Desktop"
	else
		pc_type="Portable"
	fi

	local distro=`cat /proc/version 2>&1`

	# todo: make this in a more efficient way
	if [ -n `find_in $distro 'Ubuntu'` ]; then
		pc_os_version='ubuntu'
	elif [ -n `find_in $distro 'Debian'` ]; then
		pc_os_version='ubuntu' # Ian please dont kill me
	elif [ -n `find_in $distro 'Fedora'` ]; then
		pc_os_version='fedora'
	elif [ -n `find_in $distro 'Redhat'` ]; then
		pc_os_version='fedora'
	elif [ -n `find_in $distro 'CentOS'` ]; then
		pc_os_version='fedora'
	elif [ -n `find_in $distro 'SuSE'` ]; then
		pc_os_version='suse'
	else
		pc_os_version='other'
	fi

}
